Their redemption is the world's purifying water.

他们的救赎就是世界的净化水。

70 percent of all the world's fresh water.

全世界 70% 的淡水资源。

But birth pushes us out of this luxurious water world.

但分娩之后，我们再无幸享受那奢华的水世界。

They could be rocky like Earth or water worlds without landmasses.

它们可能跟地球一样多岩石，也可能是没有陆地的水世界。

But still, nobody yet knows the true extent of this subterranean water world.

但仍旧无人知晓这个地下水世界究竟有多大。

Yet there are some people who've already adapted to life in a water world.

但有些人已经适应了水上的生活。

" but he is so much happier in his own water world."

“但他在自己的水世界里快乐多了。”

He says living in both the land and water worlds means hippos are important providers of nutrients.

同时生活在陆地和水域世界意味着河马是重要的营养物质提供者。

If we could melt the surface ice, some of the released oxygen could populate the atmosphere and we could have a water world on our hands.

如果我们能够融化表面的冰，释放的一些氧气可以进入大气层，我们就可以拥有一个水世界。

With all that size and all that depth, the pacific alone contains 710 million cubic kilometers worth of water which is roughly 50% of all the world's oceanic water.

如此之大，如此之深，仅太平洋就含有多达 7.1 亿立方公里的水，大约是世界上所有海洋水的 50%。

At the time, he says, geologists thought that Earth 4.4 billion years ago was a water world with no dry land to speak of and scientists thought some dry land would be needed for life to arise.

他说，当时地质学家认为 44 亿年前的地球是一个水世界， 没有旱地可言， 科学家们认为生命的出现需要一些旱地。